Feedback sensing for a mechanical restrictive device

(19)

(11)

EP 1 967 169 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	20.05.2009 Bulletin 2009/21

(43)	Date of publication A2:
	10.09.2008 Bulletin 2008/37

(21)	Application number: 08250782.3

(22)	Date of filing: 07.03.2008

(51)

International Patent Classification (IPC):

A61F 5/00^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA MK RS

(30)

Priority:

08.03.2007 US 683671

(71)	Applicant: Ethicon Endo-Surgery, Inc.
	Cincinnati, OH 45242 (US)

(72)	Inventors:
	Dlugos, Daniel F. Middletown, Ohio 45044 (US) Poeppelman, Amy L. Mason, Ohio 45040 (US) Burrell, Janna M. Cincinnati, Ohio 45208 (US)

(74)	Representative: Tunstall, Christopher Stephen et al
	Carpmaels & Ransford 43-45 Bloomsbury Square London WC1A 2RA London WC1A 2RA (GB)

(54)	Feedback sensing for a mechanical restrictive device

(57) An apparatus comprises an implantable mechanically adjustable band (148) configured to form a restriction in a patient. The band defines an inner diameter (180). The mechanical adjustability of the band is configured to permit the inner diameter defined by the band to be selectively varied. The apparatus further comprises an adjustment mechanism (150,152) in communication with the band. The adjustment mechanism is operable to provide the mechanical adjustability of the band. The apparatus further comprises a sensor (304) in communication with one or both of the mechanically adjustable band or the adjustment mechanism. The sensor is configured to sense a physical parameter associated with operation of the band. The physical parameter sensed by the sensor varies with the inner diameter defined by the band. The band may be used as a gastric band, among other potential uses.

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